After I posted my message to the mechanics, regarding the heater blowing cold air, a few days later the temp gauge went all the way up. My husband checked and found there wasn't much water in the radiator. After filling it up, the gauge went back down and the heater/ac started working properly.
I've found that Subaru's are quirky automobiles. There's always something minor going on with my Forester (and the Outback I had prior), but never anything major with the engine. My "check engine" light has been on for months, but no mechanic has ever been able to find a problem.
Also, with Foresters, you have to make sure you change the fuel filter and oxygen sensors periodically, or you will have power problems.
Tuesday, December 1st, 2009 AT 9:35 AM